What does code P2AFB mean?

Q: What does code P2AFB mean?

Starter Relay D Stuck Off. P2AFB is a generic powertrain code indicating that the engine control module (ECM) has detected a fault in the control circuit for starter relay D, specifically that the relay is stuck in the off position when commanded on. The ECM monitors the relay control circuit and expects to see a voltage change or current flow when the relay is energized; if the circuit remains open or the relay does not engage, the ECM sets this code.

DTC codes / P2Axx · Hybrid propulsion / P2AFB

P2AFBStarter Relay D Stuck Off

P2AFB is a generic powertrain code indicating that the engine control module (ECM) has detected a fault in the control circuit for starter relay D, specifically that the relay is stuck in the off position when commanded on. The ECM monitors the relay control circuit and expects to see a voltage change or current flow when the relay is energized; if the circuit remains open or the relay does not engage, the ECM sets this code.

SystemPowertrain

Code typeGeneric (all makes)

SeverityMedium

Fix difficultyIntermediate

AreaHybrid propulsion

Guidance is general and written for all OBD-II vehicles. Exact tests and values vary by model, so confirm the fault before replacing parts.